📄 Download the Grundfos SMART Digital DDA Data Booklet (PDF) Official Grundfos data booklet — DDA, DDC, DDE Digital Dosing
The Grundfos DDA 7.5-16 Smart Digital dosing pump (type key DDA 7.5-16 AR-C-PVC/V/C-F-31U7U7BG, product number 93065155) is a digital diaphragm metering pump with a variable-speed stepper motor drive, delivering smooth, continuous chemical injection with exceptional accuracy across its full adjustment range. The Digital Dosing Advanced (DDA) platform is Grundfos' high-end solution for complex and demanding dosing applications. Control variant AR includes an alarm relay and analog input (0/4-20 mA) for external control and monitoring.
Specifications
| Product Number | 93065155 |
|---|---|
| Type Key | DDA 7.5-16 AR-C-PVC/V/C-F-31U7U7BG |
| Maximum Flow | 1.98 GPH (7.5 l/h) |
| Maximum Pressure | 232 psi (16 bar) |
| Connections | Tubing 1/4" x 3/8" and 3/8" x 1/2" union connections |
| Dosing Head | PVC (Polyvinyl Chloride) |
| Gasket Material | FKM (Viton) |
| Valve Balls | Ceramic |
| Power Supply | 100-240 V, 50/60 Hz, single phase |
| Supersedes | P/N 97722369 (previous-generation DDA AR — same configuration) |
| Control Variant | AR-C — alarm relay, analog 0/4-20 mA + pulse inputs, with embedded connectivity (current DDA-C generation) |
| Enclosure | IP65 / NEMA 4X |
| HS Code (Tariff) | 8413.50 — reciprocating positive-displacement pump (diaphragm metering) |
| Shipping Weight | ~7 lbs (boxed) |
| Shipping Dimensions | 12" × 8" × 6" (boxed) |
Applications
- Antiscalant and chemical injection for reverse osmosis (RO) systems
- Chlorination and dechlorination (sodium hypochlorite, sodium bisulfite)
- pH adjustment and coagulant/flocculant dosing
- Industrial process water treatment and cooling water treatment
Key Features
- Current DDA-C generation with embedded connectivity for monitoring and integration
- Variable-speed stepper motor for continuous, pulsation-reduced dosing
- High turndown ratio for precise dosing from very low to full capacity
- Intuitive click-wheel interface with bright graphical LCD
- Auto-deaeration and easy priming, even against pressure
- Full-PTFE diaphragm with chemical-resistant liquid end
ForeverPure is an authorized Grundfos partner. Contact us for application sizing assistance, chemical compatibility review, and volume pricing.
